Fix potential resource leak in sslserver2 example
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index e27bbc6..27ffbb9 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -721,6 +721,7 @@
         if( fwrite( nss_keylog_line, 1, len, f ) != len )
         {
             ret = -1;
+            fclose( f );
             goto exit;
         }